Hutchinsonite

Hutchinsonite is a sulfosalt mineral of thallium, arsenic and lead with formula (Tl,Pb)
2
As
5
S
9
. Hutchinsonite is a rare hydrothermal mineral.

Hutchinsonite
Hutchinsonite, from Quiruvilca Mine, Santiago de Chuco Province, Peru. Size: 4.5×4.4×2.2 cm
General
CategorySulfosalt mineral
Formula
(repeating unit)
(Tl,Pb)
2
As
5
S
9
Strunz classification2.HD.45
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space groupPbca
Identification
ColorRed, pink, black
Crystal habitAcicular – cccurs as needle-like crystals
Cleavage{100} good
FractureVery brittle fracture producing small, conchoidal fragments
Mohs scale hardness1.5–2
LusterSub-metallic
StreakRed
DiaphaneitySubtranslucent to opaque
Specific gravity4.6
Optical propertiesbiaxial (-)
Refractive indexnα = 3.078
nβ = 3.176
nγ = 3.188; 2V = 37°
Birefringenceδ = 0.110
References[1][2][3]

It was first discovered in a sample from Binnental, Switzerland in 1903 and named after Cambridge mineralogist Arthur Hutchinson, F.R.S. (1866–1937) in 1904.

See also

References

Further reading

  • Prior, G. T. (1905). "A New Thallium Mineral". Nature. 71 (1849): 534. Bibcode:1905Natur..71Q.534P. doi:10.1038/071534b0.
  • Matsushita, Y.; Takéuchi, Y. (1994). "Refinement of the crystal structure of hutchinsonite, TlPbAs5S9". Zeitschrift für Kristallographie - Crystalline Materials. 209 (6): 475. Bibcode:1994ZK....209..475M. doi:10.1524/zkri.1994.209.6.475.
  • Nihon Kessho Gakkaishi. 32: 68. 1990. doi:10.5940/jcrsj.32.Supplement_68 //doi.org/10.5940%2Fjcrsj.32.Supplement_68. Missing or empty |title= (help)
  • Solly, R. H. (1903). "On some Minerals from Binnental, Switzerland". Proceedings of the Cambridge Philosophical Society. 12: 277.
  • Solly, R. H. (1905). "On some Minerals from Binnental, Switzerland" (PDF). Mineralogical Magazine: 72–. doi:10.1180/minmag.1905.014.64.03.
  • Raber, Thomas; Roth, Philippe (2018). "The Lengenbach Quarry in Switzerland: Classic Locality for Rare Thallium Sulfosalts". Minerals. 8 (9): 409. doi:10.3390/min8090409.
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